Free Energy Cost of Reducing Noise while Maintaining a High Sensitivity
作者： Pablo Sartori , Yuhai Tu
DOI: 10.1103/PHYSREVLETT.115.118102
关键词:
摘要: Living systems need to be highly responsive, and also keep fluctuations low. These goals are incompatible in equilibrium due the fluctuation dissipation theorem (FDT). Here, we show that biological sensory systems, driven far from by free energy consumption, can reduce their intrinsic while maintaining high responsiveness. By developing a continuum theory of E. coli chemotaxis pathway, demonstrate adaptation understood as nonequilibrium phase transition controlled dissipation, it is characterized breaking FDT. We maximum response at short time enhanced dissipation. At same time, low frequency error decrease with algebraically exponentially, respectively.
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